Air Con Leak - Aic con specialist unable to find leak, dealer blame the condenser

I've been battling with an air con leak over the last 6-9 months that nobody can find the cause of.

The gas eventually runs out/pressure switch trips after around 2-3 weeks of use.

The Skoda main dealer have regassed it with dye twice and eventually blamed the condenser had been damaged. When I asked to be shown where the leak was we couldn't find it with their UV torch (in the dealer car park).

I have since taken it to an air con specialist who have also regassed it with dye and checked it with their tracer/UV lamp when it had run out, they cannot find the leak. Its now got another 'double dose' of dye in the system + gas and I've had a go at checking for leaks myself with a UV torch.

Below is a pic of the pipe that joins up to the pressure sensor which I think looks like a possible leak.

Anyone have any knowledge of air con leak tracing? Thoughts?

Thanks

Edited 1 December, 201213 yr by Dexterous